Concrete pipe Weld-on Ends 1. Material: Q235B, Q345B steel 2. Size: DN100,DN125, DN150, DN175.... 3. Hardness: 61-65 with forged temperature 1200°c 4. Application: connection of concrete pump pipeline 5. Brand: Putzmeister, Schwing, Sany, Zoomion... 6. Type: HD weld on ends, Z/X, F/M